It's hard to understand genius. Much of the time it's even tougher to appreciate it. And so often that's because it's all about potential unfulfilled. There are those talents who operate across different parameters to the rest of us. These people often decry their own artistry, because to embrace it is to almost be overwhelmed –so what we get is a frustratingly incomplete picture. Such is the case with Marc Bolan and T.Rex.

You won't find a T. Rex DVD collection with more bite than this: 20 career-spanning songs & videos from one of the all-time great glam-rockers!